Optometric-lab: a Stereophotogrammetry Tool for Eye Movements Records
Creators
Description
In this paper as showed a non-invasive 3D eye tracker for optometry clinical applications. Measurements of biomechanical variables in clinical practice have many font of errors associated with traditional procedments such cover test (CT), near point of accommodation (NPC), eye ductions (ED), eye vergences (EG) and, eye versions (ES). Ocular motility should always be tested but all evaluations have a subjective interpretations by practitioners, the results is based in clinical experiences, repeatability and accuracy don-t exist. Optometric-lab is a tool with 3 (tree) analogical video cameras triggered and synchronized in one acquisition board AD. The variables globe rotation angle and velocity can be quantified. Data record frequency was performed with 27Hz, camera calibration was performed in a know volume and image radial distortion adjustments.
Files
14442.pdf
Files
(491.4 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:ef00774874e08aa0f7fbb0678d102c02
|
491.4 kB | Preview Download |
Additional details
References
- R. M. L. Barros and e. all., "Desenvolvimento e avalia├º├úo de um sistema para an├ílise cinem├írica tridimensional de movimentos humanos," Revista Brasileira de Engenharia Biomédica, vol. 15, pp. 79-86, 1999.
- N. Fogt and e. all, "The Effect of Experience on the Detection of Small Eye Movements," Optometry and Vision Science, vol. 77, pp. 670-674, 2000.
- J. N. v. d. Geest and M. A. Frens, "Recording eye movements with video-oculography and scleral search coils: a direct comparison of two methods," Journal of Neuroscienc Mehods, vol. 114, pp. 185-195, 2002.
- S R HATT,. et al. "The Effects of Strabismus on Quality of Life in Adults," American Journal of ophthalmology, vol. 144, pp, 643-647, 2007.
- T. Grosvernor, Primary care optometry. Boston: BH, 2002.
- R. W. Hertle and e. all, "Clinical and ocular motor analysis of the infantile nystagmus syndrome in the first 6 months of life," British Journal of Ophthalmology, vol. 86, pp. 670-675, 2002.
- H. A. JOHNS and e. all., "The Intraexaminer and Interexaminer Repeatability of the Alternate Cover Test Using Different Prism Neutralization Endpoints," Optometry and Vision Sicence, vol. 81, p. 939, 2004.
- H. MISSLISCH and e. all., "Neural Constraints on Eye Motion in Human Eye-Head Saccades," Journal of Neurophysiology, vol. 79, pp. 859-869, 1998.
- A. Ruetsche, et al., "Automated analysis of eye tracking movements," Ophthalmologica, vol. 217, pp. 320-324, 2003. [10] M. SCHEIMAN, "Nearpoint of Convergence: Test Procedure, Target Selection, and Normative Data," Optometry and Vision Science, vol. 80, pp. 214-225, 2003. [11] V. Norden, "Examination of the Patient-II," in Binocular Vision and Ocular Motility. vol. 1, Mosby, Ed., 6 ed Missouri: Mosby, 2002, pp. 168-210. [12] J. Zhu and J. Yang, "Subpixel eye gaze tracking," presented at the Automatic Face and Gesture Recognition, 2002. Proceedings. Fifth IEEE International Conference on, Washington, DC, USA, 2002.